Improvement in double-acting force-pumps



D. F. CASEY.

Double Acting Force-Pumps.

Patented Feb. 3.1874.

lull:

UNITED STATES PATENT OFFICE.

DAVID F. CASEY, OF HARRISONVILLE, OHIO, ASSIGNOR OF TWO-THIRDS OF HIS RIGHT TO MATTHEW WILSON AND CALVIN REEVES.

IMPROVEMENT IN DOUBLE-ACTING FORCEPUMPS.

Specification forming part of Letters Patent No. 147,102, dated February 3, 1874; application filed December 27, 1873.

To all whomz't may concern:

Be it known that I, DAvIn FRANKLIN CAsEv,

of Harrisonville, in the county of Meigs and State of Ohio, have invented an Improved Double-Acting Force-Bump, of which the following is a specification:

The drawing represents a vertical central section of my improved double-acting' forcepump.

This invention relates to a new submerged pump of simple construction and great etliciency; and consists in the combination of two cylindrical chambers,that project from and communicate with the punip-stock, and contain each a valve, with a cylindrical plunger that partly embraces the said chambers, and has the requisite supply-openings.

In the drawing, the letter A represents the pump-stock or main tube. With its lower part are connected two cylinders, B and C, whose axes are in line with each other, as shown. The cylinders B and C connect by pipes a b, respectively, with the stock A. D is an openended cylinder arranged between B and C, and

- embracing part thereof, as shown. Suitable packing is provided at the ends of the cylinders B and O, that enter the cylinder D, so that the latter may work tight on the former on being moved to and fro between the same. By a rod, E, or otherwise, the cylinder D is connected with a suitable working-lever, F, or other mechanism whereby reciprocating motion is imparted to it. The cylinders B and C have apertures in the ends that enter the cylinder D, as shown, said apertures being closed by valves d c, respectively. f is a diaphragm across the cylinder D, between B and C. g and h are water-supply openings in D on opposite sides ofthe diaphragm. These supplyopenings are closed by suitable valves, as shown. When the cylinder l), which acts as the plunger of the pump, is moved toward B, the valve d is forced open and g closed, while the valve h is sucked open and e closed. Water is thus drawn into the space between the diaphragm fand the cylinder C.q When next the plunger D is moved toward O, the valve h Will be forced closed and e opened, and the Water formerly drawn in will be forced into the cylinder O, and thence into A. At the same time, the valve g being sucked open and d closed, water will be drawn into the space between j' and B, to be forced into B during the next reversal of motion of the plunger. Thus a continuous action can be kept up, and it Will be seen that the cylindrical plunger acts at once as a collector and propeller of Water.

I claim- The combination of the reciprocating cylindrical plunger, having the diaphragm fand the valves g h, with the cylinders B and C on -the stock A, said cylinders having, respectively, the valves d and e, as set forth.

DAVID F. CASEY.

/Vitnesses F. G. RUSSELL, M. J. RUssELL. 

